As long as the "recommended" ranges of chlorine that you're talking about are per the best guess chart..
Stabilizer . . . . . . Min. FC . . . . Max FC . . . 'Shock' FC
=> 0 ppm . . . . . . . 1 ppm . . . . . 3 ppm . . . . 10 ppm
=> 10 - 20 ppm . . . . 2 ppm . . . . . 5 ppm . . . . 12 ppm
=> 30 - 50 ppm . . . . 3 ppm . . . . . 6 ppm . . . . 15 ppm
=> 60 - 90 ppm . . . . 5 ppm . . . . . 10 ppm . . .. 20 ppm
=> 100 - 200 ppm . . . 8 ppm . . . . . 15 ppm . . .. 25 ppm

And not the "recommended" Cl from 1-3 ppm, then as long as you maintain the recommended levels, you shouldn't have to shock except in the conditions that Watermom mentioned above. I usually shock mine after a few days of heavy use by lots of kids, or after a weather system that was hurricane-generated moves through, but otherwise there's really no need.

Janet